Dyno Tune Scheduled. Estimated HP?

Finally, I have set dyno tune day to see how much power I’m making.

Key Mod Highlights

Engine:
4.6L - Bored .020 - 10:1 CR
Stock 04 Cobra Cylinder Heads

Forced Induction:
2.9L Whipple Crusher Gen 2 - 23-24lbs PSI

Fuel:
E85 - 22 Degrees Timing

Exhaust:
Kooks LT Stepped Headers 1 5/8” x 1 3/4” - 3in Collector, Catless X-Pipe 3” Inlet 2.5” Outlet, Borla Stinger

Anyone have an idea in mind where I’d be at? Or anyone running similar setup?

+/- 800

Looks like a great setup....800 sounds in the zip code especially with that bumped compression on E85. Good luck!

Cams or anything? I could see 800 but a bit of important mods left on the table.

770-780whp

GodStang said:

Cams or anything? I could see 800 but a bit of important mods left on the table.

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Factory 03-04 Cobra cams.

Very similar to my build, I am around 10.3 CR, and have custom cams. Running 22 psi out of a 2.8h KB. I made 785hp 702tq. So you should be low to mid 800 hp.

850

03' White Snake said:

Very similar to my build, I am around 10.3 CR, and have custom cams. Running 22 psi out of a 2.8h KB. I made 785hp 702tq. So you should be low to mid 800 hp.

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Just curious if you are modded more than him why do you think he will make 65ish more HP than you? Do you have the stock inlet?

GodStang said:

Just curious if you are modded more than him why do you think he will make 65ish more HP than you? Do you have the stock inlet?

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Pretty sure that's a typo and was supposed to be "low to mid 700hp"

1-2 more psi, but .2 less cr

At the end of the day, whatever it makes once all sorted out....it's going to run very strong.

Can you add the gen4 rotors later to this blower if you want? There would be zero doubt of 800+ with those gen2 rotors swapped

c6zhombre said:

At the end of the day, whatever it makes once all sorted out....it's going to run very strong.

Can you add the gen4 rotors later to this blower if you want? There would be zero doubt of 800+ with those gen2 rotors swapped

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Pretty sure there’s revisions to the entire housing & Standard/Crusher inlet as well!

GM2Ford said:

Finally, I have set dyno tune day to see how much power I’m making.

Anyone have an idea in mind where I’d be at? Or anyone running similar setup?

Click to expand...

I am basically same build specs but 1 7/8 headers+ ported heads/cams
Made 812whp on 19 PSI - 700 +/- TQ

She going to run strong!

Jameeson said:

I am basically same build specs but 1 7/8 headers+ ported heads/cams
Made 812whp on 19 PSI - 700 +/- TQ

She going to run strong!

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Really nice for only 19psi!

Which gen is the 2.9? And what is the pulley configuration?

c6zhombre said:

Really nice for only 19psi!

Which gen is the 2.9? And what is the pulley configuration?

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gen 2, thinking about making the switch to gen 4 though!
stock lower on 3.25 pulley.

805, good beer too.


Sent from my iPhone using Tapatalk Pro

GodStang said:

Just curious if you are modded more than him why do you think he will make 65ish more HP than you? Do you have the stock inlet?

Click to expand...

1-2 more psi and a slighty larger blower. Each psi is worth 20-30 hp.

I am running a stock inlet. I am a KB fan, but from what I've been seeing, the new whipples been laying down some better numbers. My 785 dyno numbers are from hot August temps, I like to think I would break 800 with cooler temps.

I'm just curious how you know what timing the engine is going to take without even making a single pull.

--Joe

Ah the different inlet at those levels will play a huge role. As far as 20-30rwhp per psi it is accurate to an extent. I think his stock heads and cams will hurt his numbers but I think with the compression he can break 800rw. With what the OP has posted depending on dyno and day I could see 780rw to 820rw. Here is hoping for much more!

03' White Snake said:

1-2 more psi and a slighty larger blower. Each psi is worth 20-30 hp.

I am running a stock inlet. I am a KB fan, but from what I've been seeing, the new whipples been laying down some better numbers. My 785 dyno numbers are from hot August temps, I like to think I would break 800 with cooler temps.

Click to expand...